Electricity from wood-fired gasification in Uganda - a 250 and 10kW case study Conference Paper

Authors: Buchholz, T.; Da Silva, I.; Furtado, J.
Title: Electricity from wood-fired gasification in Uganda - a 250 and 10kW case study
Abstract: Wood gasification systems have the potential to contribute to the rural electrification in Sub-Saharan Africa. This paper presents an operational and economic analysis of two wood-based gasification systems (250 and 10 kW) installed in Uganda in 2007. Both systems proved their potential to compete economically with diesel generated electricity when operating close to the rated capacity. At an output of 150 kW running for ~12 h/day and 8 kW running for ~8h/day, the systems produced electricity at US$ 0.18 and 0.34/kWh, respectively. A stable electricity demand close to the rated capacity proved to be a challenge for both systems. Fuelwood costs accounted for ~US$0.03/kWh for both systems. Recovery of even a small fraction of the excess heat (22%) already resulted in substantial profitability gains for the 250 kW system. Results indicate that replicating successful wood gasification systems stipulates integration of sustainable fuelwood supply and viable business models.
Keywords: Rural Electrification; Electricity; bioenergy conversion; diesel-electric generators; fuel gasification; power generation economics; profitability; sustainable development; wood; Sub-Saharan Africa; Uganda; business model; diesel generated electricity; economic analysis; electricity demand; operational analysis; power 10 kW; power 150 kW; power 250 kW; power 8 kW; substantial profitability gain; sustainable fuelwood supply; wood fired gasification system; Color; Conductivity; Discharges (electric); Humans; Standards; Small-scale gasification; economic and operational analysis
Conference Title: Domestic Use of Energy Conference (DUE), 2012 Proceedings of the 20th
Conference Dates: 3-4 April 2012
Conference Location: Cape Town
ISBN: 978-1-4673-1232-5
Publisher: IEEE  
Date Published: 2016-06
Start Page: 65
End Page: 76
Language: English